JP3112329B2 - Plate material holding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate holding apparatus capable of holding a plate regardless of the size of the plate.

[0002]

2. Description of the Related Art Conventionally, a plate holding device for holding both ends of a plate is provided with guide rails along the work table at both ends of a work table on which the plate is placed, and the guide rail is provided with a movable arm member. And a plurality of work clamps were attached to this arm member. One arm member is disposed at each end of the guide rail, and when a plate material is loaded and placed on the work table, one arm member is moved to one end surface position of the plate material, and the arm member is moved. Then, another arm member erected opposite the arm member is moved to the position of the other end surface of the plate member, and the work clamp provided on another arm member is moved. Thus, the other end of the plate material is gripped.

[0003]

However, in the conventional plate holding apparatus described above, the arm member is manually moved according to the size of the plate, so that the work clamp must be moved and positioned according to the size of the plate. It was a difficult task, and it required a lot of work, such as making many corrections. Also, depending on the plate material, there is an inappropriate position of the work clamp. In that case, in order to change the position of the work clamp, the arm member is removed from the guide rail and the work clamp position is changed, so that automation cannot be performed. There was a problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object the purpose of being able to automatically hold a plate according to the size of the plate with a simple structure without using manual labor. It is intended to provide a plate material holding device.

[0005]

In order to achieve the above-mentioned object, a plate material holding device according to the present invention comprises a first work clamp which clamps one end of a single plate material and reciprocates in a predetermined direction. A conveyor device on which the plate material clamped by the first work clamp is placed and which reciprocates in a predetermined direction; and A second work clamp having a butting sensor for clamping the other end of the plate material by abutting the other end thereof; and a push bar integrated with the second work clamp and abutting on the conveyor device to position the conveyor device. It is characterized by becoming.

[0006]

According to the plate holding device of the present invention having the above-described structure,
One end of the sheet material taken out is gripped by a first work clamp, a conveyor device is inserted below the plate material gripped by the first work clamp, and the plate material is placed.
The work clamp and the conveyor device move in a predetermined direction in synchronization with each other and stop.

Next, when the second work clamp moves from the direction opposite to the first work clamp, the push bar mounted on the second work clamp comes into contact with the conveyor device, and the second work clamp is moved. The conveyor device is retracted and positioned with the movement of the conveyor device. The plate material clamped by the first work clamp by this positioning has its other end protruding from the end of the conveyor device by a predetermined length. The end of the protruding plate is sandwiched by a second work clamp, and the conveyor device is moved to the rear of the first work clamp by a signal from an abutment sensor provided on the second work clamp. Are gripped by the first and second work clamps, respectively.

[0008] Therefore, when a single plate material is transported to a predetermined position by the first work clamp and the conveyor device regardless of the size of the plate material, the second work clamp provided in the opposite direction to the first work clamp moves. Thereby, the other end of the plate material is gripped.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

Referring to FIG. 1 and FIG. 2, the plate holding device 1 includes a column 3 standing on the floor at an appropriate interval in the left-right direction (Y-axis direction) of FIG. A support frame 5 having a frame structure is provided on these columns 3. Inside the side plate provided in the Y-axis direction of the support frame 5, guide rails 7 extending from one end of the support frame 5 to a position beyond the center thereof are provided in the horizontal direction and the height direction of the side plate, respectively. It is provided on the side. A similar small guide rail 9 extends parallel to the guide rail 7 and extends upward from one end of the side plate to near the center in the Y-axis direction.

On the guide rail 7, a gutter-shaped conveyor frame 11 whose upper part is open is movably provided, and column-shaped pulleys 13 are provided on right and left ends of the upper side of the conveyor frame 11. The pulley 13 is rotatably supported on the conveyor frame 11.
The pulley 13 is divided into at least three portions 13A, 13B and 13C at predetermined intervals as shown in FIG. 2, and each of the pulleys 13A, 13B and 13C is supported by a support shaft 15. Each of these pulleys 13A, 13B, 13
Each of the belts C is wound around an endless belt 17 made of an elastic material such as rubber to constitute a conveyor device 19.

Each of the belts 13 described above is rotated rightward or leftward along the Y axis by a driving motor (not shown) mounted on the lower surface of the conveyor frame 11, and is mounted on the belt 17. The placed plate material or the like can be moved. Further, the conveyor device 19 is guided by the guide rail 7 by a moving motor provided on the lower surface of the conveyor frame 11 and a rack and pinion (both not shown) provided below the guide rail 7. To reciprocate in the Y-axis direction.

A clamp frame 21 is movably provided on the small guide rail 9, and a plurality of first work clamps 23 are mounted on the clamp frame 21 at appropriate intervals in the X-axis direction. . This plurality of first
Work clamps 23 are clamp frames 2
1 is provided so as to be movable in the X-axis direction, and a clamp position in the X-axis direction of a plate material to be clamped on the movable member 1 can be selected.

A clamp frame driving motor (not shown) is provided in the clamp frame 21. For example, a pinion of the clamp frame driving motor is
The clamp frame 9 meshes with a rack (both not shown) provided below the small guide rail 9, and the clamp frame 9 reciprocates in the Y-axis direction along the small guide rail 9 by driving the clamp frame driving motor. Is done.

A second work clamp 25 is provided at the other end of the support frame 5 so as to face the first work clamp 23.
Is provided. The second work clamp 25 includes a plurality of work clamps, like the first work clamp 23, and is provided at the same height as the first work clamp 23. When abutting against the plate material W, the abutting sensor 27 embedded in the gripping portion of the second work clamp 25 is provided. The gripping portion is automatically closed by a signal from the abutting sensor 27. , The plate material W can be securely held.

The second work clamp 25 is provided on a clamp frame 29 so as to be movable in the X-axis direction, so that the clamp position of the plate W in the X-axis direction can be selected similarly to the first work clamp 23. It is provided. The clamp frame 29 is provided with a reinforcing member 31 formed by a U-shaped channel. The reinforcing member 31 is connected to a piston rod 35 of a fluid cylinder 33 attached to the support frame 5. Therefore, by the operation to the fluid cylinder 33, through the piston rod 35,
The second work clamp 27 is configured to advance and retreat in the Y-axis direction.

A push bar 37 is provided below the second work clamp 25 and below the reinforcing member 31. The push bar 37 is a bar member of a square or a round bar, and is provided at a height at which the push bar 37 comes in contact with the support shaft 15 of the conveyor device 19. As shown in FIG. The shafts 15 are respectively brought into contact with each other.

In this embodiment, as shown in FIGS. 1 and 2, a portal frame 39 is provided outside the support frame 5 near the center in the Y-axis direction. W single sheet take-out device 41 is provided. The single-sheet picking device 41 includes a fluid cylinder 43 suspended from a lower surface of an upper frame of a portal frame 39, and a suction arm 4 provided on a piston rod 45 of the fluid cylinder 43.
7, and a plurality of vacuum pads 49 vertically extending downward from the suction arm 47.

Immediately below the single-sheet pick-up device 41 and below the support frame 5, there is provided a stacking device 51 for stacking plate materials W and moving up and down. The loading device 51 includes a plurality of plate materials W.
And a plate 53 on which the
5 and a fluid cylinder (not shown). The plate 53 can be moved up and down while maintaining a horizontal state by the operation of the fluid cylinder.

With the above configuration, the plate holding apparatus 1 of the present embodiment is provided.
Will be described.

1 and 2, the first work clamp 23 and the conveyor device 19 are moved to the left end side of the support frame 5, and the second work clamp 25 is moved to the right side of the support frame 5 by the fluid cylinder 33. Move to.

First, the fluid cylinder of the loading device 51 is operated to position the plate 53 at a constant height. That is, the uppermost plate material W loaded on the plate 53 is positioned and fixed at a position slightly lower than the guide rail 7. Next, the vacuum cylinder 49 of the single-sheet pick-up device 41 is actuated to bring the vacuum pad 49 into pressure contact with the plate W, and a separately provided fluid source is activated to adsorb one plate W and raise the vacuum pad 49 to raise the plate One end of W is adjusted to the height of the holding portion of the first work clamp 23. Next, the first work clamp 23 is moved rightward so that the holding portion of the work clamp 23 holds one end of the plate material W.
Next, the vacuum pad 49 is removed from the plate material W, and the single-sheet picking device 41 is raised to stand by at the original position.
The conveyor device 19 is moved rightward.

When the conveyor device 19 reaches the lower side of the first work clamp 23, the belt 17 is moved to the conveyor device 19.
Is driven in a direction opposite to the traveling direction. The driving speed is the same as the moving speed of the conveyor device 19. The back surface of the plate material W whose one end is gripped by the driving of the belt 17 is placed on the conveyor device 19 without being damaged, and when the plate material W is completely placed on the conveyor device 19, the conveyor device 19 stops.

The operation will be described below with reference to FIG.
FIG. 3A shows a state in which the plate material W gripped by the first work clamp 23 is placed on the conveyor device 19 and the conveyor device 19 is stopped. Next, when the second work clamp 25 moves forward by the operation of the fluid cylinder 33, the push bar 37 comes into contact with the support shaft 15 of the conveyor device 19 as shown in FIG. This push bar 3
The belt 17 of the conveyor device 19 is rotated clockwise by the contact of the conveyor device 1 with the support shaft 15 while the conveyor device 1 is rotated.
9 retreats in the direction of the arrow in FIG.
5 advances in synchronization with the retreat speed of the conveyor device 19.
When the end of the plate material W projects from the conveyor device 19 as shown in FIG. 3 (C), the projecting portion comes into contact with a contact sensor 27 provided on the second work clamp 25, and this contact is made. The sensor 27 is pushed into the grip.
When the abutting sensor 27 is completely pushed into the gripping portion, as shown in FIG.
5 is closed to grip the plate material W, and the fluid cylinder 33
Is stopped and the plate material W is moved to the first work clamp 23.
And the second work clamp 25.
Then, the conveyor device 19 continues to move backward and stops at a predetermined position.

As described above, the plate holding apparatus 1 of the present embodiment holds the one end of the plate W taken by the first work clamp 23 and places it on the conveyor 19,
The second work clamp 25 is moved closer from the opposite side to the first work clamp 23, and the other end of the plate material W
, The plate material W can be automatically held regardless of the length of the plate material W in the Y-axis direction. In the case where the clamping position between the first work clamp 23 and the second work clamp 25 in the holding of the plate material W interferes with the processing position of the plate material W to be clamped, the first work clamp 23 side must be In either case, it can be shifted in the X-axis direction between the clamp frame 21 and the clamp frame 29 on the second work clamp 25 side. Therefore, the plate material holding device 1 of the present embodiment can correct the clamp positions in the Y-axis direction and the X-axis direction.

The present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate changes.

[0027]

As described above, according to the present invention, since the configuration is as described in the claims, it has a simple structure without the use of humans, and is automatically adjusted according to the size of the plate material. The plate can be held.

[Brief description of the drawings]

FIG. 1 is a side view of a plate material holding device according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an operation explanatory view of a main part of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plate holding device 19 Conveyor device 23 1st work clamp 25 2nd work clamp 27 Butt sensor 37 Push bar

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B21D 43/00 B21D 43/10

Claims (1)

(57) [Claims] 1. A first work clamp, which reciprocates in a predetermined direction by clamping one end of a sheet material taken out of a single sheet, and a plate material clamped by the first work clamp is placed and placed on the first work clamp. A conveyor device that reciprocates in the direction
A second work clamp having a butting sensor that is provided to be reciprocally movable facing the first work clamp and that abuts the other end of the plate material on the tip thereof, and the second work clamp; And a push bar that is integrated with the conveyor device and abuts on the conveyor device to position the conveyor device.